Eyeglasses.



N. M. BAKER.

EYECLSSES.

APPLICATION FILED FEB, I3, 1911.

Lfgyg, Patented sept.'17,1912.

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entorno en /iras reinar ernten..

NELSGN M. BKER, 0F SOUTHBRIDGE, MASSE'USETT'S, SSIGNOE T0 AMERICAN OPTICAL CGMPANY, 0E' SOUTEIBRIDGE, MASSACHUSETTS, A' CORPORATION 0F MAS- SACHUSETTS.

Specification of Letters` Patent. `lludginal application-med october 10, 1906, Eeral No. 457,119. Divided and this application tiled February EYEGLASSES.

patented Sept, i7, i912.

13, 1911. Serial No. 608,290.

To all whom it may concern:

Be it known that lf, NELSON M. BAKER, a citizen of the United States, and resident of Southbridge, county ci Worcester, and State of Massachusetts, have invented certain new and useful Improvements in Eyeglasses, of which the following is a specification.

My invention relates to linger piece eyeglasses provided with `pivoted, spuugpressed nose clamps and has for its principal object to render -such glasses more sightly by proving an improved form ot ousing for said spring.

Other incidental objects will the specification proceeds.

This application is a division of a prior' application filed by me Cfctober l0, 1908, No

appear as Referring to the drawings, Figure l is a plan view of a pair of eye glasses as de scribed with my invention applied thereto ;l Fig. 2 is an enlarged central section 'taken through` the center 'of the pivot screw show ing'one is a similiar of my invention. y

Referring to Figs. land' theposebridge has lens clamps B secured to eachof its endspfto whichare fastened the' lenses C. Nose clamps D serve to maintain the glasses in position on the nose and are lprovided with arms E which terminate in operating linger pieces F. Screws G having Shanks of even diameter throughout extend into the nose bridge A, each screw being sur-- rounded by a sleeve z' having a shoulder 2" and an upwardly extending tubular memberor circumferential flange i2-which forms a chamber in which the coil spring H is located and concealed. The arms E are perforated to receive the sleeve z' and this sleeve is held in position Aagainst the bridge by having the head of screw G bear against the upper edge of the portion i2. Suitable openings are left in the Hangs t? through. which the one end of the spring H may be projected so as to abut against the lens clamp B and the other end to engage the arm E. rThe tendency oi' this Yspring is to press the nose clamps D toward eachother so that a pressure is exerted 0n the nose of the wearer for maintaining the glasses'in position. Spring H may of course haveii's fixed end," instead of abutting against the' form of my invention; Aand Fig 3 View showing a modified form"A i ,1t swings, means lens clamp B, engaged with or abutting any other lixed element of the eye glasses, as .for example the pivot screw itself or some fixed parts associated with it.

Referring to Fig. 3, the lshank of screw g is provided with a reduced screw-threaded portion g2 which screws into the nose bridge A. while the shank proper forms th for the arm E. The head of the screw is provided with a dependent tubular member or circumferential flange g which engages the upper surface of the arm E. rlhis arm E in this form is therefore held between said Hangs g3 and the nose bridge A, the spring H eing contained and concealed in the annular space or chamber formed by the liange g3 the head. g. and the arm E. lfn this form also there are provided suitable openings in said flange gs through which the ends of spring H project.

Various modiiications may be made without departing from thescope of my inven`4 tlon as defind in the following.

l' claimf:

l. ln eyeglasses, the combination with the bridge, cfa nose clamp, a pivot upon which it swings, a tubular member separable from said-bridge central with said pivot and inclosing a chamber, a spring within said chamber, and means coperating with said tubular member for attaching said pivot to the bridge substantially as and tor the purpose described.

2. ln eyeglasses, the combination with the bridge, of a nose clamp, a pivot uponwhic'h it swings, a tubular member integra! with said pivot and inclosing a. chamber, a spring within said chamber, and means for attacl1- ing said pivot to the bridge, substantially as and for the purpose described.

3. In eyeglasses, the combination with the bridge, of a nose clamp, a pivot upon which provided with a head for attaching said pivot to the bridge, a tubular member inclosi'ng a chamber reaching to said-head, and a spring within said chamber, substantially as and described.

4. In eyeglasses, the combination with the bridge, of a nose clamp, a pivot upon which it swings comprising a sleeve provided with a shoulder and an upstanding tubular meme pivot for the purposev loer, and a pivot screw provided. with a threaded' end and a heed adapted to bear' swings, and a tubular member surrounding but spaced fromy said shank so vas to form a chamber for inclosing the controlling spring t against the top of said tubular member said screw being spaced from said liange so as to form a chamber for inclosing the controlling spring, substantially as and for the purpose described.

one end of said tubular member forming a bearing for one side of the nose clamp andv the other reaching to said head', substan tiallyas and for the purpose described.

6.y In eyeglasses, the combination with the bridgevof a' nose elampyay pivot upon which it swings, a tubular member central with said-pivot and having said; .nose clamp be meshes tween it and the bridge, a spring surround- 'about the screw threaded device, and a de vice engaging said screw threaded device and cooperating with' oneof the first two named devices to inclose the spring;

In testimony whereof have hereunto set' my hand and seal in the presence ofv two subscribing witnesses.

NnLsoN'M. AK'ER. [La] Witnesses? MARTIN S. LOUGHNAN, HARRY H. STYLT.

"Copies-"of 'this patent maybe obtained for ve cents each, by addressing the Commissioner of Patents, Y washington, n. of# 

